Description

(3R,3'R,9-Cis)-B,B-Carotene-3,3'-Diol CAS NO 60497-64-5 is a specific stereoisomer of zeaxanthin, a vital xanthophyll carotenoid. This compound is highly valued for its potent antioxidant properties and its role as a key component of the macular pigment in the human eye. It is essential for manufacturers in the nutraceutical, pharmaceutical, and food/feed additive industries seeking high-purity, bioavailable ingredients for vision health and coloration applications.

Application

• Dietary Supplements & Nutraceuticals: A critical ingredient in formulations aimed at supporting macular health, visual acuity, and providing antioxidant protection.
• Pharmaceutical Intermediates: Used in the synthesis of specialized pharmaceutical compounds targeting ocular diseases and oxidative stress-related conditions.
• Food & Beverage Fortification: Incorporated into functional foods and drinks as a natural colorant (imparting yellow to red hues) and a nutrient for eye health.
• Animal Feed & Aquaculture: Added to feed for poultry (to enhance egg yolk color) and in aquaculture for salmonid fish to improve flesh pigmentation and health.
• Cosmeceuticals: Utilized in advanced skincare products for its antioxidant benefits, helping to protect skin from environmental oxidative damage.
• Research & Development: Serves as a high-purity standard and reagent in biochemical, nutritional, and ophthalmological research.

Basic Information

Product Name	(3R,3'R,9-Cis)-B,B-Carotene-3,3'-Diol
CAS No.	60497-64-5
Molecular Formula	C₄₀H₅₆O₂
Molecular Weight	568.87 g/mol
Synonyms	(9Z)-Zeaxanthin; 9-cis-Zeaxanthin; all-trans-Zeaxanthin (isomer); (3R,3'R)-Zeaxanthin; beta,β-Carotene-3,3'-diol; Lutein isomer; Food Orange 8; E160h (when used as a food additive); Vegetable xanthophyll
EINECS	Contact for details

Quality Control

Our (3R,3'R,9-Cis)-Zeaxanthin is produced under strict quality management systems. Each batch is tested to ensure high purity and consistency, with specifications suitable for nutraceutical and research applications. Certificates of Analysis (COA) documenting identity, purity (by HPLC), and related substances are provided to guarantee compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C (refrigerated) or under inert atmosphere for long-term stability, as the compound is easily oxidized and light-sensitive. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (HPLC/UV)	Conforms to standard
Assay (HPLC)	≥ 95.0% (as total Zeaxanthin isomers)
Specific Isomer Content ((3R,3'R,9-Cis)-Zeaxanthin)	≥ 90.0% (of total)
Related Substances (HPLC)	Total impurities ≤ 5.0%
Solvent Residue (GC)	Meets ICH guidelines
Heavy Metals	< 10 ppm
Loss on Drying	≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.